Children fathered by older men are likely to be less intelligent than the offspring of younger dads, Australian and US scientists found in a report published Tuesday.The research contrasted sharply with earlier studies showing that older mothers produced children more likely to record above average intelligence scores, the researchers concluded.
Lead scientist John McGrath, from the Brisbane-based Queensland Brain Institute, said the result was a world first and had implications for men in Western societies who have delayed fatherhood until their 40s or older.
"The offspring of older fathers show subtle impairments on tests of neurocognitive ability during infancy and childhood," he said in the new research. - source: Agence France-Presse
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